Filter



UNITED STATES PATENT OFFICE.

THOMAS C. CLARKE, OF CAMDEN, NEW JERSEY.

FILTER.

Specification of Letters Patent No. 13,026, dated June 12, 1855.

To all whom it may concern.'

Be it known that I, THOMAS C. CLARKE, of Camden, in the county of Camdenand State of New Jersey, have invented a new and Improved Mode ofFiltering l/Vater and other Liquids; and` I do hereby declare that thefollowing is a full and eXact description thereof, reference being hadto the accompanying drawings and to the letters of reference markedthereon.

I construct a shell or cup with a screwthread to screw on to the nozzleof `a hydrant (A A) and a tube extending down from the screw (J) toaccommodate a valve (B) which valve (B) has connected with it by a rod,a lower valve (C). Both of these valves (B and C) are pushed down by thepressure of the running stream when the water is turned on from the pipeor hydrant. When the water is turned on the pressure forces the valve(B) down until it finds an outlet at D, the same pressure closing thevalve (C) attached to the other` end of the valve rod, thus preventingthe passage of the water below which filling the cavity (K K K) isforced through the filtering medium (E passing which the water escapesin a filtered state through the nozzle (H). On turning the faucet orbra-ss cock the pressure on the valve is removed when a spiral spring (LL) throws up the valves and by opening valve (C) allows the remainingwater and sediment to pass out at I. The felt or other filtering mediumis sustained in position by a perforated plate E E lying in the lidwhich lid is attached to the cup or shell by a screw joint (G,G.)

In the exterior view of my filter A is the screw-thread by which thefilter is secured tothe faucet or cock G, the screw-joint attaching thelid to the cup or shell, andI-I is the nozzle for passing the filteredwater.

That I claim as my invention and desire to secure by Letters-Patent, is-

The application of t-he spring so that it shall in connection with thepressure of the incoming stream of water work the upper Aand lowervalves always leaving the lower valve (C) open for the passage ofsediment after the running of the water ceases, thus forming aself-cleansing filter, which cleansing is further promoted by thefacility with which the filtering medium itself is changed and renewedby unscrewing the lid in which the filtering medium is secured.

THOMAS C. CLARKE.

Vitnesses:

E. G. FocAR, CHAs. P. CLARKE.

